Hanna Phosphate Checker - Low Range or Ultra Low?

Jax15 · Jul 3, 2019

I'm starting a new build, a Waterbox 130.4 and have almost all my gear in an awesome nerd pile waiting for the aquarium to arrive next week (yes!). I'm planning to try my hand at mixed reef that leans mostly SPS dominant. I'm going to buy a Hanna phosphate checker, but I'm not sure if I should do low range or ultra low range. I'm leaning towards low, but wanted to see what you all think? Does low go low enough?

Is ultra "too" low for many situations?

Aco5000 · Jul 3, 2019

Phosphorus ULR is the best one since you're looking for .1 and below, it's the HI736, highly recommend

Heart of Dixie · Jul 3, 2019

+1 on the ULR

Jax15 · Jul 3, 2019

Thanks for the suggestions. Do you think the HI736 ULR Phosphorous is worth doing the conversion math, versus the HI774 ULR Phosphate, which might be slightly less accurate but is a bit easier to use?

Aco5000 · Jul 3, 2019

That's what I bought, the conversion is super simple or use the attached Hanna table and no math needed, I like the accuracy but I'm sure the other would work
https://www.google.com/url?sa=t&sou...FjADegQIARAB&usg=AOvVaw0X6bi10i6cWPKhibc3kGyM

saltyhog · Jul 3, 2019

I have the ULR Phosphorous and I don't even need to bother with the conversion....I know where it should run in ppm. If you have an Apex and use it to log your test results as I do, it makes the conversion for you when you log it in.

Jax15 · Jul 3, 2019

Thanks for the feedback. Based on this I'm going to go with the ULR Phosphorous. The range after conversion is 0.00 - 0.06 ppm, which if I'm doing it right should be in that range anyway. If it's maxed out, I'll know I need to lower the phosphate until it gets a reading. Helps to have some user input here, appreciate it!